Ndk: Add EntityOwner class

Former-commit-id: ef7486e39124642cb1d1b8c24c4c726dc592486b

SDK/include/NDK/EntityOwner.inl

@@ -0,0 +1,78 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#include <Nazara/Core/StringStream.hpp>
+#include <functional>
+#include <limits>
+
+namespace Ndk
+{
+	inline EntityOwner::EntityOwner(Entity* entity) :
+	EntityOwner()
+	{
+		Reset(entity);
+	}
+
+	inline EntityOwner::EntityOwner(const EntityOwner& handle) :
+	EntityHandle(handle)
+	{
+	}
+
+	inline EntityOwner::EntityOwner(EntityOwner&& handle) :
+	EntityHandle(std::move(handle))
+	{
+	}
+
+	inline EntityOwner::~EntityOwner()
+	{
+		Reset(nullptr);
+	}
+
+	inline void EntityOwner::Reset(Entity* entity)
+	{
+		if (m_entity)
+			m_entity->Kill();
+
+		EntityHandle::Reset(entity);
+	}
+
+	inline void EntityOwner::Reset(const EntityOwner& handle)
+	{
+		Reset(handle.GetEntity());
+	}
+
+	inline void EntityOwner::Reset(EntityOwner&& handle)
+	{
+		Reset(handle.GetEntity());
+	}
+
+	inline EntityOwner& EntityOwner::operator=(Entity* entity)
+	{
+		Reset(entity);
+
+		return *this;
+	}
+
+	inline EntityOwner& EntityOwner::operator=(const EntityOwner& handle)
+	{
+		Reset(handle);
+
+		return *this;
+	}
+
+	inline EntityOwner& EntityOwner::operator=(EntityOwner&& handle)
+	{
+		Reset(std::move(handle));
+
+		return *this;
+	}
+}
+
+namespace std
+{
+	template<>
+	struct hash<Ndk::EntityOwner> : public hash<Ndk::EntityHandle>
+	{ 
+	};
+}